Retirement, Other Postretirement Benefits, And Defined Contribution Plans Schedule Of Benefit Obligations, Plan Assets, Funded Status, Amounts Recognized In The Balance Sheet (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
Amounts recognized in the balance sheet
Current liabilities	$ (104,845)	$ (68,336)
Non-current liabilities	(1,213,555)	(1,949,325)
Amounts recognized as AOCI (before tax)
Defined Benefit Plan, Plan Assets, Payment for Settlement	(604,753)	(553,576)
Other Postretirement Benefits Plan [Member]
Change in APBO
Balance at beginning of year	1,189,682	1,181,075
Service cost	24,734	26,578	$ 24,500
Interest cost	27,306	21,278	28,597
Defined Benefit Plan, Accumulated Benefit Obligation, Increase (Decrease) for Plan Amendment	(858)	(3,168)
Actuarial (gain)/loss	(297,128)	20,955
Employee contributions	22,486	22,023
Benefits Paid	(100,632)	(79,308)
Defined Benefit Plan, Gross Prescription Drug Subsidy Receipts Received (Deprecated 2017-01-31)	264	249
Balance at end of year	865,854	1,189,682	1,181,075
Change in Plan Assets
Fair value of assets at beginning of year	771,319	737,866
Actual return on plan assets	(122,184)	57,965
Employer contributions	52,835	32,773
Employee contributions	22,486	22,023
Benefits Paid	(100,632)	(79,308)
Fair value of assets at end of year	623,824	771,319	737,866
Funded status	(242,030)	(418,363)
Amounts recognized in the balance sheet
Current liabilities	(42,484)	(42,000)
Non-current liabilities	(199,546)	(376,363)
Amounts recognized as a regulatory asset (before tax) [Abstract]
Defined Benefit Plan Regulatory Asset Net Prior Service Cost (Credit) Before Tax	(29,323)	(37,693)
Defined Benefit Plan, Regulatory Asset, Gain (Loss) before Tax	(16,956)	7,981
Defined Benefit Plan Regulatory Liability Before Tax	(12,367)	(45,674)
Amounts recognized as AOCI (before tax)
Prior service cost	(45,167)	(61,488)
Net loss	(133,656)	27,138
Accumulated other comprehensive income (before taxes)	(178,823)	(34,350)
Qualified Pension Obligations [Member]
Change in APBO
Balance at beginning of year	8,409,620	9,143,652
Service cost	138,085	165,278
Interest cost	235,805	191,107
Actuarial (gain)/loss	(1,660,463)	(158,276)
Benefits Paid	(956,941)	(932,141)
Balance at end of year	6,166,106	8,409,620	9,143,652
Change in Plan Assets
Fair value of assets at beginning of year	6,993,110	6,854,426
Actual return on plan assets	(1,264,071)	714,827
Employer contributions	470,000	355,998
Benefits Paid	(956,941)	(932,141)
Fair value of assets at end of year	5,242,098	6,993,110	6,854,426
Funded status	(924,008)	(1,416,510)
Amounts recognized in the balance sheet
Non-current liabilities	(924,008)	(1,416,510)
Amounts recognized as a regulatory asset (before tax) [Abstract]
Defined Benefit Plan, Regulatory Asset, Gain (Loss) before Tax	(1,842,348)	(2,214,390)
Amounts recognized as AOCI (before tax)
Net loss	408,839	449,756
Entergy Arkansas [Member]
Amounts recognized in the balance sheet
Non-current liabilities	(118,020)	(185,789)
Amounts recognized as AOCI (before tax)
Defined Benefit Plan, Plan Assets, Payment for Settlement	(96,000)	(104,400)
Entergy Arkansas [Member] | Other Postretirement Benefits Plan [Member]
Change in APBO
Balance at beginning of year	221,183	209,369
Service cost	4,457	4,135	3,626
Interest cost	5,050	3,726	4,712
Defined Benefit Plan, Accumulated Benefit Obligation, Increase (Decrease) for Plan Amendment	273	(85)
Actuarial (gain)/loss	(54,923)	14,323
Employee contributions	5,521	5,637
Benefits Paid	(17,585)	(15,954)
Defined Benefit Plan, Gross Prescription Drug Subsidy Receipts Received (Deprecated 2017-01-31)	42	32
Balance at end of year	164,018	221,183	209,369
Change in Plan Assets
Fair value of assets at beginning of year	315,495	304,192
Actual return on plan assets	(49,887)	22,387
Employer contributions	1,573
Defined Benefit Plan Refund to Employer		(767)
Employee contributions	5,521	5,637
Benefits Paid	(17,585)	(15,954)
Fair value of assets at end of year	255,117	315,495	304,192
Funded status	91,099	94,312
Amounts recognized in the balance sheet
Current liabilities	0	0
Assets for Plan Benefits, Defined Benefit Plan	91,099	94,312
Amounts recognized as a regulatory asset (before tax) [Abstract]
Defined Benefit Plan Regulatory Asset Net Prior Service Cost (Credit) Before Tax	7,079	8,691
Defined Benefit Plan, Regulatory Asset, Gain (Loss) before Tax	(5,224)	6,797
Amounts recognized as AOCI (before tax)
Prior service cost	0	0
Net loss	0	0
Accumulated other comprehensive income (before taxes)	0	0
Entergy Arkansas [Member] | Qualified Pension Obligations [Member]
Change in APBO
Balance at beginning of year	1,579,346	1,739,382
Service cost	25,210	28,632
Interest cost	45,378	35,683
Actuarial (gain)/loss	(280,691)	(41,227)
Benefits Paid	(201,145)	(183,124)
Balance at end of year	1,168,098	1,579,346	1,739,382
Change in Plan Assets
Fair value of assets at beginning of year	1,302,588	1,285,856
Actual return on plan assets	(233,236)	133,207
Employer contributions	92,971	66,649
Benefits Paid	(201,145)	(183,124)
Fair value of assets at end of year	961,178	1,302,588	1,285,856
Funded status	(206,920)	(276,758)
Amounts recognized in the balance sheet
Non-current liabilities	(206,920)	(276,758)
Amounts recognized as a regulatory asset (before tax) [Abstract]
Defined Benefit Plan, Regulatory Asset, Gain (Loss) before Tax	(561,323)	(612,963)
Amounts recognized as AOCI (before tax)
Net loss	0	0
Entergy Louisiana [Member]
Amounts recognized in the balance sheet
Non-current liabilities	(389,631)	(528,213)
Amounts recognized as AOCI (before tax)
Defined Benefit Plan, Plan Assets, Payment for Settlement	(146,600)	(166,600)
Entergy Louisiana [Member] | Other Postretirement Benefits Plan [Member]
Change in APBO
Balance at beginning of year	253,031	255,571
Service cost	5,633	6,174	5,993
Interest cost	5,770	4,520	6,216
Defined Benefit Plan, Accumulated Benefit Obligation, Increase (Decrease) for Plan Amendment	323	357
Actuarial (gain)/loss	(65,501)	(2,367)
Employee contributions	5,081	5,186
Benefits Paid	(21,268)	(16,460)
Defined Benefit Plan, Gross Prescription Drug Subsidy Receipts Received (Deprecated 2017-01-31)	57	50
Balance at end of year	183,126	253,031	255,571
Change in Plan Assets
Fair value of assets at beginning of year	0	0
Actual return on plan assets	0	0
Employer contributions	16,187	11,274
Employee contributions	5,081	5,186
Benefits Paid	(21,268)	(16,460)
Fair value of assets at end of year	0	0	0
Funded status	(183,126)	(253,031)
Amounts recognized in the balance sheet
Current liabilities	(15,356)	(15,839)
Non-current liabilities	(167,770)	(237,192)
Amounts recognized as a regulatory asset (before tax) [Abstract]
Defined Benefit Plan Regulatory Asset Net Prior Service Cost (Credit) Before Tax	0	0
Defined Benefit Plan, Regulatory Asset, Gain (Loss) before Tax	0	0
Amounts recognized as AOCI (before tax)
Prior service cost	(12,015)	(16,967)
Net loss	(82,308)	(17,551)
Accumulated other comprehensive income (before taxes)	(94,323)	(34,518)
Entergy Louisiana [Member] | Qualified Pension Obligations [Member]
Change in APBO
Balance at beginning of year	1,736,396	1,927,271
Service cost	33,520	38,271
Interest cost	49,330	39,740
Actuarial (gain)/loss	(357,572)	(28,439)
Benefits Paid	(205,252)	(240,447)
Balance at end of year	1,256,422	1,736,396	1,927,271
Change in Plan Assets
Fair value of assets at beginning of year	1,446,658	1,476,306
Actual return on plan assets	(259,490)	150,917
Employer contributions	53,658	59,882
Benefits Paid	(205,252)	(240,447)
Fair value of assets at end of year	1,035,574	1,446,658	1,476,306
Funded status	(220,848)	(289,738)
Amounts recognized in the balance sheet
Non-current liabilities	(220,848)	(289,738)
Amounts recognized as a regulatory asset (before tax) [Abstract]
Defined Benefit Plan, Regulatory Asset, Gain (Loss) before Tax	(445,116)	(556,345)
Amounts recognized as AOCI (before tax)
Net loss	18,546	23,181
Entergy Mississippi [Member]
Amounts recognized in the balance sheet
Non-current liabilities	(23,742)	(59,065)
Amounts recognized as AOCI (before tax)
Defined Benefit Plan, Plan Assets, Payment for Settlement	(48,000)	(45,700)
Entergy Mississippi [Member] | Other Postretirement Benefits Plan [Member]
Change in APBO
Balance at beginning of year	61,001	61,990
Service cost	1,354	1,448	1,468
Interest cost	1,401	1,110	1,536
Defined Benefit Plan, Accumulated Benefit Obligation, Increase (Decrease) for Plan Amendment	(1,300)	0
Actuarial (gain)/loss	(14,465)	(1,335)
Employee contributions	1,443	1,386
Benefits Paid	(5,075)	(3,604)
Defined Benefit Plan, Gross Prescription Drug Subsidy Receipts Received (Deprecated 2017-01-31)	6	6
Balance at end of year	44,365	61,001	61,990
Change in Plan Assets
Fair value of assets at beginning of year	97,888	93,475
Actual return on plan assets	(15,519)	7,024
Employer contributions	759
Defined Benefit Plan Refund to Employer		(393)
Employee contributions	1,443	1,386
Benefits Paid	(5,075)	(3,604)
Fair value of assets at end of year	79,496	97,888	93,475
Funded status	35,131	36,887
Amounts recognized in the balance sheet
Current liabilities	0	0
Assets for Plan Benefits, Defined Benefit Plan	35,131	36,887
Amounts recognized as a regulatory asset (before tax) [Abstract]
Defined Benefit Plan Regulatory Asset Net Prior Service Cost (Credit) Before Tax	(3,637)	(4,109)
Defined Benefit Plan, Regulatory Asset, Gain (Loss) before Tax	(2,153)	4,254
Defined Benefit Plan Regulatory Liability Before Tax	(1,484)	(8,363)
Amounts recognized as AOCI (before tax)
Prior service cost	0	0
Net loss	0	0
Accumulated other comprehensive income (before taxes)	0	0
Entergy Mississippi [Member] | Qualified Pension Obligations [Member]
Change in APBO
Balance at beginning of year	448,858	510,109
Service cost	8,043	9,070
Interest cost	12,979	10,446
Actuarial (gain)/loss	(88,303)	(14,831)
Benefits Paid	(60,583)	(65,936)
Balance at end of year	320,994	448,858	510,109
Change in Plan Assets
Fair value of assets at beginning of year	356,424	371,394
Actual return on plan assets	(63,392)	37,251
Employer contributions	33,287	13,715
Benefits Paid	(60,583)	(65,936)
Fair value of assets at end of year	265,736	356,424	371,394
Funded status	(55,258)	(92,434)
Amounts recognized in the balance sheet
Non-current liabilities	(55,258)	(92,434)
Amounts recognized as a regulatory asset (before tax) [Abstract]
Defined Benefit Plan, Regulatory Asset, Gain (Loss) before Tax	(140,389)	(173,511)
Amounts recognized as AOCI (before tax)
Net loss	0	0
Entergy New Orleans [Member]
Amounts recognized as AOCI (before tax)
Defined Benefit Plan, Plan Assets, Payment for Settlement	(16,200)	(14,300)
Entergy New Orleans [Member] | Other Postretirement Benefits Plan [Member]
Change in APBO
Balance at beginning of year	31,866	31,707
Service cost	397	437	445
Interest cost	694	521	784
Defined Benefit Plan, Accumulated Benefit Obligation, Increase (Decrease) for Plan Amendment	0	0
Actuarial (gain)/loss	(6,867)	988
Employee contributions	440	403
Benefits Paid	(2,566)	(2,194)
Defined Benefit Plan, Gross Prescription Drug Subsidy Receipts Received (Deprecated 2017-01-31)	7	4
Balance at end of year	23,971	31,866	31,707
Change in Plan Assets
Fair value of assets at beginning of year	111,137	102,734
Actual return on plan assets	(18,204)	10,068
Employer contributions	333	126
Employee contributions	440	403
Benefits Paid	(2,566)	(2,194)
Fair value of assets at end of year	91,140	111,137	102,734
Funded status	67,169	79,271
Amounts recognized in the balance sheet
Current liabilities	0	0
Assets for Plan Benefits, Defined Benefit Plan	67,169	79,271
Amounts recognized as a regulatory asset (before tax) [Abstract]
Defined Benefit Plan Regulatory Asset Net Prior Service Cost (Credit) Before Tax	(2,898)	(3,814)
Defined Benefit Plan, Regulatory Asset, Gain (Loss) before Tax	(2,229)	16,003
Defined Benefit Plan Regulatory Liability Before Tax	(669)	(19,817)
Amounts recognized as AOCI (before tax)
Prior service cost	0	0
Net loss	0	0
Accumulated other comprehensive income (before taxes)	0	0
Entergy New Orleans [Member] | Qualified Pension Obligations [Member]
Change in APBO
Balance at beginning of year	195,380	220,287
Service cost	2,745	3,038
Interest cost	5,491	4,392
Actuarial (gain)/loss	(40,462)	(9,118)
Benefits Paid	(22,718)	(23,219)
Balance at end of year	140,436	195,380	220,287
Change in Plan Assets
Fair value of assets at beginning of year	172,366	172,551
Actual return on plan assets	(31,067)	17,639
Employer contributions	1,129	5,395
Benefits Paid	(22,718)	(23,219)
Fair value of assets at end of year	119,710	172,366	172,551
Funded status	(20,726)	(23,014)
Amounts recognized in the balance sheet
Non-current liabilities	(20,726)	(23,014)
Amounts recognized as a regulatory asset (before tax) [Abstract]
Defined Benefit Plan, Regulatory Asset, Gain (Loss) before Tax	(51,868)	(62,805)
Amounts recognized as AOCI (before tax)
Net loss	0	0
Entergy Texas [Member]
Amounts recognized as AOCI (before tax)
Defined Benefit Plan, Plan Assets, Payment for Settlement	(48,900)	(31,900)
Entergy Texas [Member] | Other Postretirement Benefits Plan [Member]
Change in APBO
Balance at beginning of year	71,961	74,233
Service cost	1,322	1,384	1,219
Interest cost	1,596	1,269	2,008
Defined Benefit Plan, Accumulated Benefit Obligation, Increase (Decrease) for Plan Amendment	0	(3,776)
Actuarial (gain)/loss	(16,291)	4,270
Employee contributions	924	1,491
Benefits Paid	(6,046)	(6,923)
Defined Benefit Plan, Gross Prescription Drug Subsidy Receipts Received (Deprecated 2017-01-31)	16	13
Balance at end of year	53,482	71,961	74,233
Change in Plan Assets
Fair value of assets at beginning of year	182,285	174,096
Actual return on plan assets	(28,341)	13,523
Employer contributions		98
Defined Benefit Plan Refund to Employer	(23)
Employee contributions	924	1,491
Benefits Paid	(6,046)	(6,923)
Fair value of assets at end of year	148,799	182,285	174,096
Funded status	95,317	110,324
Amounts recognized in the balance sheet
Current liabilities	0	0
Assets for Plan Benefits, Defined Benefit Plan	95,317	110,324
Amounts recognized as a regulatory asset (before tax) [Abstract]
Defined Benefit Plan Regulatory Asset Net Prior Service Cost (Credit) Before Tax	(16,161)	(20,532)
Defined Benefit Plan, Regulatory Asset, Gain (Loss) before Tax	(24,246)	(2,571)
Defined Benefit Plan Regulatory Liability Before Tax		(17,961)
Amounts recognized as AOCI (before tax)
Prior service cost	0	0
Net loss	0	0
Accumulated other comprehensive income (before taxes)	0	0
Entergy Texas [Member] | Qualified Pension Obligations [Member]
Change in APBO
Balance at beginning of year	371,802	410,664
Service cost	5,999	6,921
Interest cost	10,729	8,381
Actuarial (gain)/loss	(65,795)	(3,971)
Benefits Paid	(57,170)	(50,193)
Balance at end of year	265,565	371,802	410,664
Change in Plan Assets
Fair value of assets at beginning of year	341,915	349,748
Actual return on plan assets	(60,841)	35,405
Employer contributions	2,513	6,955
Benefits Paid	(57,170)	(50,193)
Fair value of assets at end of year	226,417	341,915	349,748
Funded status	(39,148)	(29,887)
Amounts recognized in the balance sheet
Non-current liabilities	(39,148)	(29,887)
Amounts recognized as a regulatory asset (before tax) [Abstract]
Defined Benefit Plan, Regulatory Asset, Gain (Loss) before Tax	(95,729)	(113,790)
Amounts recognized as AOCI (before tax)
Net loss	0	0
System Energy [Member]
Amounts recognized in the balance sheet
Non-current liabilities	(40,750)	(76,104)
Amounts recognized as AOCI (before tax)
Defined Benefit Plan, Plan Assets, Payment for Settlement	(23,500)	(33,000)
System Energy [Member] | Other Postretirement Benefits Plan [Member]
Change in APBO
Balance at beginning of year	47,875	47,701
Service cost	1,239	1,340	1,254
Interest cost	1,116	878	1,130
Defined Benefit Plan, Accumulated Benefit Obligation, Increase (Decrease) for Plan Amendment	141	69
Actuarial (gain)/loss	(10,679)	1,289
Employee contributions	1,222	1,353
Benefits Paid	(5,657)	(4,769)
Defined Benefit Plan, Gross Prescription Drug Subsidy Receipts Received (Deprecated 2017-01-31)	17	14
Balance at end of year	35,274	47,875	47,701
Change in Plan Assets
Fair value of assets at beginning of year	54,650	52,619
Actual return on plan assets	(8,725)	4,235
Employer contributions	944	1,212
Employee contributions	1,222	1,353
Benefits Paid	(5,657)	(4,769)
Fair value of assets at end of year	42,434	54,650	52,619
Funded status	7,160	6,775
Amounts recognized in the balance sheet
Current liabilities	0	0
Assets for Plan Benefits, Defined Benefit Plan	7,160	6,775
Amounts recognized as a regulatory asset (before tax) [Abstract]
Defined Benefit Plan Regulatory Asset Net Prior Service Cost (Credit) Before Tax	(789)	(1,249)
Defined Benefit Plan, Regulatory Asset, Gain (Loss) before Tax	(4,054)	(2,967)
Amounts recognized as AOCI (before tax)
Prior service cost	0	0
Net loss	0	0
Accumulated other comprehensive income (before taxes)	0	0
System Energy [Member] | Qualified Pension Obligations [Member]
Change in APBO
Balance at beginning of year	394,794	441,148
Service cost	7,746	8,851
Interest cost	11,286	9,087
Actuarial (gain)/loss	(81,504)	(14,746)
Benefits Paid	(44,020)	(49,546)
Balance at end of year	288,302	394,794	441,148
Change in Plan Assets
Fair value of assets at beginning of year	312,060	310,818
Actual return on plan assets	(56,267)	32,125
Employer contributions	28,619	18,663
Benefits Paid	(44,020)	(49,546)
Fair value of assets at end of year	240,392	312,060	$ 310,818
Funded status	(47,910)	(82,734)
Amounts recognized in the balance sheet
Non-current liabilities	(47,910)	(82,734)
Amounts recognized as a regulatory asset (before tax) [Abstract]
Defined Benefit Plan, Regulatory Asset, Gain (Loss) before Tax	(125,876)	(153,782)
Amounts recognized as AOCI (before tax)
Net loss	$ 0	$ 0